chokebore

[ chohk-bawr, -bohr ]
/ ˈtʃoʊkˌbɔr, -ˌboʊr /

noun

a bore in a shotgun that narrows toward the muzzle to prevent shot from scattering too widely.
a shotgun with such a bore.

Origin of chokebore

First recorded in 1870–75; choke + bore2

British Dictionary definitions for chokebore

chokebore
/ (ˈtʃəʊkˌbɔː) /

noun

a shotgun bore that becomes narrower towards the muzzle so that the shot is not scattered
a shotgun having such a bore